Note: Repeat steps 5 and 6 until all devices under UBS Controller are removed

7. Shut down computer.
CAUTION: Ensure that the Shut Down option is selected instead of Restart.
8. Wait a few seconds and turn computer on. When it reboots you will see "Windows has detected new or added hardware"

Note: You will have to insert your Windows CD, if prompted.

These steps will refresh the USB ports.

Added Notes: 1) If your mouse is a USB you will have to use the
keyboard to shut down your computer. 2) It would be wise to unplug
everything from your USB ports EXCEPT your mouse and/or keyboard before
you restart the computer to avoid Windows replicating any printers,
scanners, digi-cams, etc. Once Windows has refreshed your USB
controllers and ports, shut down again. reconnect, and restart.

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Related Questions:

Unplug the PCMCIA card first. Then disable the onboard USB hub and
ports. Shutdown, plug in the PCMCIA card and reboot into Windows. Let
Windows detect the card and if necessary put in the driver CD for the
card. Had similar issues with my desktop PCI USB card. After disabling
the Onboard though it works perfectly fine now.

goto http://hp.com support and drivers....type in model details(toshiba etc) locate youre model from list click on it ...scroll down page ..locate manuals title in list.choose service manual for your model ...download ...need acrobat to read files.